We got rid of PBs and we had a LOT of them. We were lucky to get £25 every six months for either of us. The largest ever was £50. Very disappointed after 15 years of this. The increase in lower prizes made no difference.
We've topped up our ISAs now, and other vehicles as the allowance for non-ISA savings interest has grown as well.
Besides... I really do not fancy lending my savings to the government any longer! 
www.theguardian.com/money/2016/apr/02/unhappy-returns-nsi-cuts-premium-bond-prizes
The reduction reflects the fact that both the total number and value of prizes is being cut. The total value of the prize pot in March was £67m, but in June it is estimated it will be £62m.
As part of the changes there will be fewer higher-value prizes and more smaller ones. For example, it’s predicted there will be just two £100,000 prizes in June, compared with five in March, while the number of £50,000 prizes is set to plummet from 12 to five. By contrast, the total number of £50 and £100 prizes will shoot up from 37,000 last month to an estimated 128,000 in June.
Even with all those extra lower-value prizes in the mix, the odds of winning a prize with each £1 bond number will lengthen to 30,000-1. That compares with the current odds of 26,000-1. The changes partly reflect the fact that NS&I needs to raise less money in the next financial year than it did this year. It is also a response to rivals dropping their rates, making the government-owned institution’s returns look more appealing.